Canvas报错: Failed to execute 'getImageData' on 'CanvasRenderingContext2D': The canvas has been tainted by cross-origin data.

let bgImage = new Image()
bgImage.src = this.currentUrl
bgImage.onload = () => {
    this.canvasObj.drawImage(bgImage, 0, 0, this.canvas.width, this.canvas.height)
    this.bgData.push(this.canvasObj.getImageData(0, 0, 1000, 400))
}

//this.currentUrl 是服务器图片地址

在向canvas添加服务器上的图片时候报跨域的错误

解决办法：添加如下代码解决跨域问题

bgImage.crossOrigin = ''